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- Requirement: Valve must be tight against reverse flow. 要求:这种阀门对于回流必须密封紧密。
- Purpose: To test valve No. 1 for tightness against reverse flow. 目的:检测1号止回阀对于回流的密封性。
- Use a check valve to prevent reverse flow into the cylinder. 采用止回阀,防止回流入钢瓶。
- Torsion spring checks shall have reversible elastomer discs and in operation produce drip tight closure against reverse flow caused by backpressure or backsiphonage. 扭力弹簧止回阀应该配置双向合成橡胶阀瓣，并且在工作时对于反压力和反虹吸所产生的回流具有防滴漏关闭性能。
- Tri-link checks shall have reversible elastomer discs and in operation shall produce drip tight closure against reverse flow caused by backpressure or backsiphonage. 三连接止回阀应该配置双向合成橡胶阀瓣，运行时对于由于反压力或发虹吸产生的反向流动具有不透水的密封性。
- Purpose: To test check valve No. 2 for tightness against reverse flow. 目的:检测止回阀2号对于回流的密封性。
- Spring loaded for fast closure, eliminating reverse flow slam and water hammer. 负载弹簧用于快速关闭,消除逆流冲击和水锤。
- Precision machined tilting disc and seat for tight shutoff in reverse flow direction. 精密机加工的倾斜式阀瓣和阀座,适用于逆流的紧密关闭。
- Never reverse flow through a regulator or rely upon it to act as a check valve. It will not perform this function. 禁止通过调整器倒流或依靠它作为止回阀。它不允许执行这个功能。
- Series 774X Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water system. 系列747双止回阀总成用于防止污水回流进入饮用水系统中。
- Requirements: Valve must be tight against reverse flow under all pressure differentials. 要求:在所有压差下,阀门对于回流必须是密封的。
- For lesion at the distal region, this flap may be modified as a distal-based flap based on reverse flow. 其适应症为近位或中位指节部位之疤痕挛缩，较远位者则可改采逆流之远位皮瓣重建。
- Equipped with mechanical lift check feature to close valve the moment flow stops, preventing reverse flow. 配置机械提升式止回阀，当阀门出现流量停止时关闭阀门，防止倒流。
- Julie has been squeezed reversing flow, it is necessary to help keep the railing, still smiling, yet secure manner. 朱莉被人流挤倒，要紧抓栏杆求救，却依然笑容满面，力保风度不失。
- Series774 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system. 系列747双止回阀总成用于防止污水回流进入饮用水系统中。
- Series774 XDCDA Double Check Detector Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water supply. 系列747XDCDA双止回阀检测器总成用于防止污水回流进入饮用水系统中。
- A system of Ce(SO4)2H2SO4 for determination of COD in natural water samples by reversed flow injection analysis is discussed. 研究了Ce（SO4）2?H2SO4体系反向流动注射分析法测定环境水中化学需氧量（COD）的试验条件。
- Youngmin Jo, Chi Tien, Madhumita B.Ray. Development of a post cyclone to improve the efficiency of reverse flow cyclones. POWDER TECHNOLOGY. 2000 Vol 113, PP99-108. 沈恒根张玮.;旋风分离器进口回转通道气尘分离模型
- A disadvantage of the turbine is that it is not reversible. 涡轮机的一个缺点就是它不可以反转。
- The effects of moisture are apparent on the forming of the blocked reversal flow in the upslope and the reversal flow in the lee of the mountain. 小山脉地形降水主要发生在山脉的迎风坡，表现出典型的迎风降水和背风雨影特征。
